| 合金化元素对纳米晶铝合金热稳定性的影响 |
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| 作者姓名： | Hany Rizk AMMAR Muneer BAIG Asiful Hossain SEIKH Jabair Ali MOHAMMED |
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| 作者单位： | Mechanical Engineering Department;Metallurgical and Materials Engineering Department;Engineering Management Department;Center of Excellence for Research in Engineering Materials |
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| 摘 要： | 为研究加入Fe和Ti扩散系数有限的元素对纳米晶铝合金热稳定性的影响,制备Al?10％Fe(质量分数)和Al?10％Fe?5％Ti(质量分数)合金.将初始混合粉末在真空下球磨100 h,用高频感应加热烧结系统将球磨后的粉末制备成块体样品.采用X射线衍射仪、维氏显微硬度仪、场发射扫描电子显微镜和透射电子显微镜对球磨后的粉末...
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| 关 键 词： | 纳米晶Al?Fe?Ti合金 机械合金化 感应加热烧结 热稳定性 显微组织 力学性能 |
| 收稿时间： | 4 March 2020 |
Effect of alloying elements on thermal stability of nanocrystalline Al alloys |
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| Hany Rizk AMMAR,Muneer BAIG,Asiful Hossain SEIKH,Jabair Ali MOHAMMED.Effect of alloying elements on thermal stability of nanocrystalline Al alloys[J].Transactions of Nonferrous Metals Society of China,2021,31(1):11-23. |
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| Authors: | Hany Rizk AMMAR Muneer BAIG Asiful Hossain SEIKH Jabair Ali MOHAMMED |
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| Affiliation: | 1. Mechanical Engineering Department, College of Engineering, Qassim University, Buraidah 51452, Saudi Arabia;2. Metallurgical and Materials Engineering Department, Faculty of Petroleum and Mining Engineering, Suez University, Suez, Egypt;3. Engineering Management Department, College of Engineering, Prince Sultan University, Riyadh, Saudi Arabia;4. Center of Excellence for Research in Engineering Materials, King Saud University, Riyadh, Saudi Arabia |
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| Abstract: | The effect of incorporating limited-diffusivity elements such as Fe and Ti on thermal stability of the nanocrystalline Al alloy was investigated.Al?10wt.%Fe and Al?10wt.%Fe?5wt.%Ti alloys were fabricated.The initial mixtures of powders were milled for 100 h in vacuum.The bulk samples were fabricated from the milled powders in a high frequency induction heat sintering(HFIHS)system.The milled powders and the bulk sintered samples were characterized by X-ray diffraction(XRD),Vickers microhardness,field emission scanning electron microscopy(FESEM-EDS)and transmission electron microscopy(TEM).The observations indicated that Fe and Ti were completely dispersed in the matrix to form a supersaturated solid solution(SSSS)with Al.Additionally,the inclusion of alloying elements led to an increase in hardness and yield strength of the alloy by 127%and 152%,respectively.The elevated temperature compression tests were carried out to evaluate the thermal stability of the alloys.The Al?10wt.%Fe?5wt.%Ti alloy revealed the optimum thermally stable behavior of the three alloys studied.The incorporation of Fe and Ti improved the thermal stability of the developed alloys through inhibiting the grain growth,hindering dissolution and growth of second phases(such as Al13Fe4 and Al13Ti),and forming a stable solid solution. |
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| Keywords: | nanocrystalline Al?Fe?Ti alloy mechanical alloying induction heat sintering thermal stability microstructure mechanical properties |
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